High Precision Single Row Angular Contact Ball Bearings for CNC spindles Robotics

Angular Contact Ball Bearings – Precision and Strength for Demanding Rotary Applications

Angular contact ball bearings are inherently more capable than deep groove ball bearings when it comes to supporting moderate to high axial forces while also maintaining high-speed capabilities. Whether you are designing a CNC machining center spindle, an electric motor for an industrial pump, a robotic arm joint, or an aerospace actuator, the ability to tailor your bearing’s contact angle, precision grade, cage material and preload makes angular contact ball bearings the definitive choice for machinery where performance cannot be compromised.

Key Features:

• 1. Defined Contact Angles for Optimised Load-Speed Balance
  The most fundamental distinguishing feature of angular contact ball bearings is the contact angle – the angle between the line connecting the ball-raceway contact points and a line perpendicular to the bearing axis. Standard contact angles (15°, 25°, 30°, 40° and even 60°) are available, with each angle offering a distinct trade-off between axial load capacity and speed capability.

• 2. Preload Optimisation – Zero Clearance, Maximum Stiffness
  Angular contact ball bearings are almost never used singly in precision applications. Instead, they are typically preloaded – a permanent internal axial load applied to eliminate internal clearance. Preload removes all axial and radial free play, resulting in.

• 3. Precision Grades – From Industrial to Ultra-Premium
  Angular contact ball bearings are available across a wide spectrum of precision levels, with each grade offering progressively tighter tolerances on dimensional accuracy and running accuracy.

• 4. Superior Combined Load Handling and Low Friction
  Angular contact ball bearings are proficient in managing radial loads in both directions and axial loads in one direction (as single bearings). When arranged in pairs or double-row configurations, they can handle axial loads in both directions while maintaining excellent speed capability. Compared to deep groove ball bearings, angular contact bearings offer superior axial load capacity, lower friction coefficients at high speeds and reduced heat generation due to optimised internal geometry. The strategic disposition of the inner and outer rings prevents the contact point between the ball and raceway from aligning with the vertical centreline of the bearing, which is the key to their combined-load capability.

Applications

• CNC Machine Tool Spindles
• Industrial Electric Motors & Servo Drives
• High-Speed Pumps & Compressors
• Robotics & Automation
• Renewable Energy
• Aerospace Equipment
• Automotive Driveline Systems
• Medical Equipment
• Conveyor Systems & Material Handling
• Trucks, Trailers & Buses